Trending ▼   ResFinder  

periodic table

5 pages, 1 questions, 1 questions with responses, 1 total responses,    0    0
$ω@T!*
Ashoka Universal School (AUS), Nashik
11th-12th
+Fave Message
ProfileTimelineUploads
 Home > swati22 >

Formatting page ...

Periodic Table and Periodic Properties 1. Periodic Table : A tabular chart representing systematic arrangement of elements in the groups and periods, in the order of their increasing atomic numbers is called periodic table. 2. Modern Periodic Law : The physical and chemical properties of all elements are periodic function of their atomic numbers. 3. Periodicity of Elements : The phenomenon due to which elements repeat their properties at regular intervals in a periodic table is called periodicity of elements. 4. Group : The arrangement of elements in the vertical columns of the periodic table, such that all the elements in it have similar chemical properties is called group. 5. Period : The arrangement of elements in the horizontal row in the order of their atomic numbers, such that the properties of elements gradually change from metallic to non-metallic is called a period. 6. Periodic Properties : Metallic and non-metallic character, atomic size, ionisation potential, electron affinity and electronegativity are called periodic properties. 7. Main points of Long form (Modern) Periodic Table : (i) There are seven horizontal rows, called periods. (ii) There are 18 vertical columns called groups. (iii) The elements occuping left and right wings of vertical column are called normal elements or representative elements. (iv) The strongly metallic elements occupy groups I A and II A on the extreme left of the periodic table. (v) The strongly non-metallic elements are placed in groups VI A and VII A on the right hand side of the periodic table. 1 Key Points

Formatting page ...

Top Contributors
to this ResPaper
(answers/comments)


Just Unique
(1)

Formatting page ...

Formatting page ...

Formatting page ...

 

  Print intermediate debugging step

Show debugging info


 

 

© 2010 - 2024 ResPaper. Terms of ServiceContact Us Advertise with us

 

swati22 chat